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Finding the Fourth Proportional to 1,395.31, 2,092.45 and 604.59

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Solution

The fourth proportional to 1,395.31, 2,092.45 and 604.59 is: 906.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,395.31 : 2,092.45 = 604.59 : x
  2. Step 2: Convert to fraction form
    1,395.31/2,092.45 = 604.59/x
  3. Step 3: Cross multiply
    1,395.31x = 2,092.45 × 604.59
  4. Step 4: Simplify right side
    1,395.31x = 1,265,074.35
  5. Step 5: Solve for x
    x = 1,265,074.35/1,395.31
  6. Step 6: Final answer
    x = 906.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.